Answer:
Among the earliest inventions were the abacus, the sundial, and the Kongming lantern. The Four Great Inventions,the compass, gunpowder, papermaking, and printing – were among the most important technological advances, only known to Europe by the end of the Middle Ages 1000 years later.
Explanation:
I think the answer is gold im not entirely sure
They helped in a effort to prevent the further spread of communism. The UN believes that communism is evil and shouldn't spread.
Answer: D
Explanation:
the puzzling nature created tension adding to its presistancd
